Loudspeaker



FIG. 1 is a front perspective view of the loudspeaker;

FIG. 2 is a rear perspective view of the loudspeaker;

FIG. 3 is a front view of the loudspeaker;

FIG. 4 is a side view of the loudspeaker; and,

FIG. 5 is a top view of the loudspeaker. 

The ornamental design for a loudspeaker, as substantially shown and described. 